US3647324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically driven pumps capable of use as heart pumps
Assignee: Individual
•
Filing: 1969-12-18
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Granted: 1972-03-07
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Expires: 1989-12-18
Abstract
Abstract Pumps capable of use as heart pumps; that is, for pumping blood in connection with the maintenance of the life function in a human or animal body to replace one or more pumping functions of the heart. The pumps are also useful for pumping kidney fluids. The pumps herein described are electrically driven, that is, they are driven by assemblies which function as electric motors.
Inventors
- 👤 Edson Howard Rafferty
- 👤 Harold D Kletschka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:23
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/40; A61M60/403; A61M60/422; A61M60/20; A61M60/205; A61M60/216; A61M60/226; A61M60/80; A61M60/802; A61M60/804; A61M60/806; A61M60/10; A61M60/104; A61M60/117; A61M60/122; A61M60/126; A61M60/148; A61M60/818; A61M60/82; A61M60/825; F; F05; F05B; F05B2200/00; F05B2200/10; F05B2200/15
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
198 words
Pump for pumping blood, kidney fluids, and other relatively delicate fluids, comprising pump housing means having a pumping chamber of substantially circular cross sections therewithin and having a fluid inlet to the center of said pumping chamber and a fluid outlet from the periphery of said pumping chamber, rotator means mounted for rotation within said pumping chamber, electric motor means comprising magnetic pole means associated with one of said rotator means and said housing means, winding means associated with one of said rotator means and said housing means, and means for supplying electric current to said winding means to drive said rotator means in rotation whereby said rotator means pumps fluid through said pumping chamber from said inlet means to said outlet means; said rotator means comprising vane means extending from said inlet to adjacent said outlet, said vane means having smooth spaced facing surfaces defining said flow passage means therebetween which rotate when said rotator is rotated and frictionally contact fluid introduced to therebetween through said inlet to cause smooth circular movement of the fluid concentric with the rotation of said rotator means and at increased velocity as the fluid moves from said inlet toward said outlet.
Claim 2
Dependent Claim
198 words
Pump for pumping blood, kidney fluids, and other relatively delicate fluids, comprising pump housing means having a pumping chamber of substantially circular cross sections therewithin and having a fluid inlet to the center of said pumping chamber and a fluid outlet from the periphery of said pumping chamber, rotator means mounted for rotation within said pumping chamber, electric motor means comprising magnetic pole means associated with one of said rotator means and said housing means, winding means associated with one of said rotator means and said housing means, and means for supplying electric current to said winding means to drive said rotator means in rotation whereby said rotator means pumps fluid through said pumping chamber from said inlet means to said outlet means; said rotator means comprising vane means extending from said inlet to adjacent said outlet, said vane means having smooth spaced facing surfaces defining said flow passage means therebetween which rotate when said rotator is rotated and frictionally contact fluid introduced to therebetween through said inlet to cause smooth circular movement of the fluid concentric with the rotation of said rotator means and at increased velocity as the fluid moves from said inlet toward said outlet.
Claim 3
Dependent Claim
16 words
The combination of claim 1, said magnetic pole means comprising magnetized portions of said vane means.
Claim 4
Dependent Claim
16 words
The combination of claim 1, said magnetic pole means comprising magnetized portions of said vane means.
Claim 5
Dependent Claim
15 words
The combination of claim 2, said magnetic pole means being provided in each vane means.
Claim 6
Dependent Claim
60 words
The combination of claim 1, said housing means having second chamber means concentric with said pumping chamber, disc means disposed in said second chamber means coupled for rotation with said rotator, seal means around said coupling to prevent fluid flow from said pumping chamber into said second chamber means, said magnetic pole means comprising magnetized portions of said disc means.
Claim 7
Dependent Claim
27 words
The combination of claim 1, said magnetic pole means comprising solenoid winding means carried by said rotator; means for supplying electrical current to said solenoid winding means.
Claim 8
Dependent Claim
19 words
The combinatioN of claim 5, including plastic layer means covering said solenoid winding means to prevent fluid contact therewith.
Claim 9
Dependent Claim
24 words
The combination of claim 1, said winding means being in said housing means and being sealed from said pumping chamber by plastic layer means.
Claim 10
Dependent Claim
22 words
The combination of claim 1, said rotator means being coupled to said electric motor means for rotation thereby by magnetic coupling means.
Claim 11
Dependent Claim
21 words
The combination of claim 8, at least a portion of said rotator means being suspended for rotation in a magnetic field.
Claim 12
Dependent Claim
165 words
Pump for pumping blood, kidney fluids, and other relatively delicate fluids, comprising pump housing means having a pumping chamber of substantially circular cross sections therewithin and having a fluid inlet to the center of said pumping chamber and a fluid outlet from the periphery of said pumping chamber, rotator means mounted for rotation within said pumping chamber, electric motor means comprising magnetic pole means associated with one of said rotator means and said housing means, and means for supplying electrical current to said winding means to drive said rotator means in rotation whereby said rotator means pumps fluid through said pumping chamber from said inlet means to said outlet means; said housing means having second chamber means concentric with said pumping chamber, disc means disposed in said second chamber means coupled for rotation with said rotator, seal means around said coupling to prevent fluid flow from said pumping chamber into said second chamber means, said magnetic pole means comprising magnetized portions of said disc means.
Claim 13
Dependent Claim
165 words
Pump for pumping blood, kidney fluids, and other relatively delicate fluids, comprising pump housing means having a pumping chamber of substantially circular cross sections therewithin and having a fluid inlet to the center of said pumping chamber and a fluid outlet from the periphery of said pumping chamber, rotator means mounted for rotation within said pumping chamber, electric motor means comprising magnetic pole means associated with one of said rotator means and said housing means, and means for supplying electrical current to said winding means to drive said rotator means in rotation whereby said rotator means pumps fluid through said pumping chamber from said inlet means to said outlet means; said housing means having second chamber means concentric with said pumping chamber, disc means disposed in said second chamber means coupled for rotation with said rotator, seal means around said coupling to prevent fluid flow from said pumping chamber into said second chamber means, said magnetic pole means comprising magnetized portions of said disc means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |